Rubber elastic force-cup.



W. P. SCHAGHT. RUBBER BLASTIC FORGE GUP. APPLIUATION FILED SEPT. 25,1908.

Y Patented Allg. 3, 1909.

I mnro MQW/)kiwi wILLiAM` F'. scnncnn rari-snr omer. v

OF GQSHEN, INDIANA.

RUBBER ELASTI FORCE-CUP.

` Toall whomt concern: i

Be it known that I, WILLIAM F. SoHAoH'r, a citizen of the United States,residing at Goshen, in the county of Elkhart and State of Indiana, haveinvented anew anduseful vRubber Elastic Force-Cup, of which thefollowing is a specification.

This invention relates to force cups and has as its primary object torovide, in a single structure, a device of th1s class which may be usedas a force cup or as a suction cu l A further object of the invention isto provide, in a device of this class, a means for holding the handle inthe handle socket of the device, the handle and its socket being soconstructed that the handle may be readily removed and reinserted andsecurely held in place without the necessity of cementing it orattaching it by means of washers and a screw as is at present the meansmost commonly` employed. i

In the accompanying drawings, Figure 1 is a perspective View of the cupembodying my invention, Fig.- 2 is a vertical sectional viewtherethrough taken in a plane with the valve, and Fig. 3 is a detailview similar to Fig. 2 but before the cup has been punctured.

As shown in the drawings, the cup embodying my invention is comprised ofa cup shaped body 5 provided at its edge with a bead 6 and axially witha handle socket 7, the entire cup being formed integral and of rubber.The cup 5 is also formed at one side with a tongue 8 which extendsoutwardly from the said cup and is reinforced at its point of junctionwith the wall of the cup as clearly shown in Fig. 1 of the drawings, andas indicated by the numeral 9.

It is my intention that the cup above described shall be placed upon themarket with the tongue 8 in the condition shown in Fig. 3 of thedrawings, the cup when used in this condition, being designed to act asa force cup. If it is preferred that the cup should act as a suctioncup, after it has been purchased, it is only necessary for the purchaserto form a slit in the tongue 8 length- Wise thereof as indicated by thenumeral 10 in Figs. 1 and 2 of the drawings, this being done with anordinary penknife or a like implement. After this slit 10 has beenformed in the wall of the cup, the eifect of a valve is obtained as theslit will open when pressure is exerted in a downward direction upon thecup and will close as soon as this spveincation of Letters Pat-ent.

Aplication led September 25, 1908.' SeriaLNo. 454,778-- ratentea Aug. 3,1909;

pressure is relieved, .the opening of the slit allowing.A the escape ofthe air from. beneath the cup and its closing and subsequent exfpansionfofthe cup to normal position-creating a artial vacuum andcausing asuction throng `the drain pipeor the like over` the end ofwhich the cuphas been placed. Itf` will be understood that by formlngthe slit 10 through the extension which is formed integral with the cupwall and which is reinforced, a quick closing and thoroughly airtightvalve is produced.

Formed interiorlly at the upper end t ereof is an annular rib 11 havingan abru t shoulder 12 presented in thedirection o the bottom end of thesocket. The handle for the cup is indicated by the numeral 13 and is ofsuch diameter as to tit snugly in the socket 7 and is formed adjacentits lower end with an annular groove 14 in which the rib 11 is designedto seat when the handle is inserted into the socket, the said groovehaving one of its walls substantially vat right angles to the axis ofthe. handle to engage the .abrupt shoulder 12 of the rib 11, it beingunderstood that the handle is, by this construction, more securely heldin place in the socket and that any additional securing such as cementor a screw' or the like is entirely unnecessary.

One of the advantagesb of the handle and handle socket constructionabove described lies in the fact that the handle may be packedseparately from the cup when the devices are being shipped in largequantities whereas in the ordinary construction of such devices, thehandles are not readily detachable and it is not only difficult to packthe devices in a small space but they are liable to injury duringshipment.

What is claimed is :-A

1. A device of the class described comprising an elastic cup shapedmember provided with a portion upon its outer wall adapted to bepunctured. 2. A device of the lclass described `comprising an elasticcup .shaped member provided with a thickened portion upon its outer walladapted to bel punctured.

3. A device of theclassdescribed .co1n-v prising an elastic cup shapedmember formed upon its outer wall with an outwardly extendingprotuberance adapted to be punctured.

4. A device of the class described com-v ot the handle socket 7A prisingan elastic cup shaped member having upon its outer wall a reinforcedportion adapted to be punctured.

5. A device of the class described comrisin an elastic cup shaped memberorme with av-handle socket provided interiorly with an annular ribhaving a convexed up er face and an abruptly shouldered un er face, anda handle fittedinto the socket and formed.with a circumscribing groovehaving a concaved wall and an abrupt Wall aording a shoulder engafgingtheabruptly shouldered under face o the rib of the socket.

6. A device of the class described comprisin an elastic cup shapedmember' forme with a handle socket provided in teriorly with an annularrib having an abrupt shoulder, and a handle fitted into the socket andformed with a groove' adapted to reoeive the'rib and having one of ltswalls of abru t formation to engage' with the shoulder og the rib.

In testimony that I claim the foregoing as my own, I have hereto aiixedmy slgnature in the presence of two witnesses. t

, WILLIAM F. SCHACHT.y

Witnesses:

MYBoN J. RHoADs, C.' E. LOVEJOY;

